Lock nut



Jan. 9, 1923, 1,441,714. '1. ROGLER.

LOCK NUT.

FILED MAR. 28, 1922. 2 SHEETS-SHEET 1.

John Rm 5151" Jan. 9, 1923. J ROGLER 1,441,714,

LOG-K NUT. I

FILED MAR. 28, I922. 2 S EEEEEEEEEEE 2.

I John. Rm IE1" I" I Q y 0% Patented Jan. 9, 1923..

haeifll i .ionlv ROGLER, or JEFFERSON, WISCONSIN.

LOCK NUT.

Application filed March 28, 1922. Serial No. 547,388.

To (/U whom it may concern.

Be it known that 1, JOHN Roonnn, a citizen ot' the United States, and resident of Jefferson, in the county of Jefferson and State of Wisconsin, have invented certain new and useful Improvements in Lock Nuts;

and I do hereby declare that the following is a t'ull, clear, and exact description thereof.

This invention relates to nut. locks.

In the preferred modification a nut is provided, retained securely with a lock, the nut having an endless series of notches therein adapted to receive the ends of a pair of spring urged dogs. The nut is tightened by rotation on a bolt and drives the securing means on the look into an object through which the bolt is directed. During the rotation of the nut, the pawls ride idly, but finally engage in the'notches and prevent reverse rotation of the nut.

A primary object of the invention is the ease of operation of the device, the mere rotation of the nut operating to clamp it properly in position, the pawls and notches acting automatically, the spring moving the dog into the notches. There is no resistance to the clamping movement-of the nut except that which is ordinarily encountered.

An object of the invention is the reliabil- .ity of the device, which is retained in locking relationship despite vibration and shock. There is no tendency of the bolt to release. The action of the dogs is positive and strong and there is no danger of wear of parts in. suchwise to release thedogs. The lock is provided with gripping members preventing it from rotating with respect to the object with which it contacts so that all parts are maintained permanently in rigid locking relationship. Y

Another object of the invention is the ease oi release oi the lock. The pawls are provided with slots adapted to receive the ends of a screw driver, and on the rotation of the pawls the spring ceases to be operative to restore them to engaging position. Thus the pawl may be readily disengaged and the nut rotated to release the parts.

With the above and other objects in View, which will appear as the description. proceeds, my invention resides in the novel construction, combination. and arrangement of parts, substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the ure 1.

herein disclosed invention may be made as come Within the scope of the claims.

In the accompanying drawing. I have illustrated one complete example of the physical embodiment of the present invention constructed according to the best mode I have so far devised for the practical application of the principles thereof, and in which:

Figure 1 is a central sectional view ofthe lock in operative position, assembled with relation to a bolt and objects secured.

Figure 2 is an end elevation of the device.

Figures 3 and 4 are transverse sections on the lines 33 and 44, respectively, of Fig- Figure 5 is a central, vertical section.

Figure 6 is an end elevation, and

Figure 7 is a transverse section on the line 7-7 of Figure 5.

In securing boards 10 and 11 together, the head 12 of bolt 13 is brought into with board '10 and lock 140 is positioned about the threaded end of the bolt. Nutlois threaded with relation to the bolt and is movable with respect to lock 1%, but ordinarily inseparable thereironi because of'the action of screws 16 directed through lockle and driven in recess 17 The nut is'provided with an endless series of notches 18 adapted to receive a pair of oppositely disposed pawls 19 rotatable on spindles 20 secured with respect to lock 14 by heads 21.

Lock lt. is provided with a pair of oppositely disposed recesses 22 receiving leat' springs 23, which are bowed and Contact centrally with spindles 20. The spindles are cut away at 24: providing a flat surface for contact with the springs. Obviously. thetendency of the springs in contact with the fiat surfaces is to retain the dogs directed inwardly.

Thus in tightening up nut 15 the pawls l9 ride over the surface oi the not. dropping into succeeding notches 18. The pawls are positioned in recesses 25 so that looking at them in the direction viewed in Figures 2 and 3, the pawls are free to rotate in a noun tier-clockwise direction. When, however, the nut is in its final or securing position, the pawls have the. relation with nut 15 shown. in Figure 2.

Shoulders 26 operate to prevent rotation of the pawls in. a clockwise direction. Be-

cause of this dogging action, the nut is firmly secured in locked position. There is no possibility of the release of pawls 19 because the tendency of springs 23 is to retain them contact which might be used to I incapable of turning.

in engagement with the notches so that the nut may be subjected to Considerable shock and vibration without possibility of its be coming detached.

In the assembly of the parts in the rela tionship shown in Figure 1, teeth 2"? rigid wlt-h lock 1d are pressed into board 11, lock nutl5. ln unlocking'the nut alscrew iver isinserted in slots 28 in pawls 19 and the ends of the pawls are'removed from notches 18 so that the nut may be rotated. The rotation of nut causes relative longitudinal movement between the nut and bolt 13 hecauseof the threaded relationship therebetween. No longitudinal displacement oc: curs, however between the nut nd the loci: because of the operation of: screws 16 riding; in-slot 17. Consequently when :therotation of nut 15 has progressed sufiiciently, itand the lock are released from bolt 13.

, glnzthe modification of the device shown in Figures 5, G, and 7, bolt is provided with a slot 31 in which a key 32 rigid with lock is iree'toslide, serving to prevent the rotation of the lock vith respect to the bolt and thus performing a function similar to that of teeth 27. Lock carries a pair of spindles 34. reduced at35 and r'id with arms 36 directed outwardly from recesses 37 in loclr 33. As shown .inFiqure/T, spindles 34 are provided with flat sin. aces 38 and 39, 39; The end of spindles 84 is also cutaway to form a semi-cylindrical portion 40 adapted to engage with the endless series'oi": teeth 4-]; on nut 42, The ationship of the semi-cylindrical portions 4:0 to surfaces 38, 38 and 39, 39 is such that when surface 39 is in; contact with spring -13, semi-c vlindri cal portion 40, as shown in Figure 6, is swung out of engagement with teeth ll-"so that the semi-cylindrical portion 40 does not operate to prevent the reverse rotation 05 the nut42, the teeth d1 of which travel in a well'd l in lock 33, the surface of lock 33 which the bolt is secured in such-' immediately adjacent the well being circular and uninterrupted.

The parts are in th s position when nut 42 is tightened upon bolt 30, key 32 sliding "in slot" and preventing the rotation of lock 33 relative to bolt.

surfaceuiS is such as shown in Figure 6.

The portion 40 engages with one of the teeth 41 and prevents reverse rotation of nut 42. Thus the device is locked securely v1n pOSltlOH.

In this modification, also, springs 43 operate to exert through portions 40 a dogging action on teeth 4:1 so that there is no possihility of the release of. the nut by reason of 410 loclr 33 and nut 42 are secured against reverse rotatory movement with respect to each a nut threaded thereon and having an endshock or vibration. By means of portions less series of notches therein, a look, a pawl engag eable in said notches, a spindle rigid with said pawl rotatably mounted on said lock, said spindle having fiat and a rounded. surface, and a spring contacting with said. spindle and cooperating with said vflat surface to retain said pawl in one of said notches.

2. The combination of a threaded member, a nut threaded thereon and having an endless series of notches therein, a look, a pawl engageable in said notches, a spindle rigit with said 'pawlrotatably mounted on said lock, said spindle havinga flat and a rounded surface. a spring-. contacting with said spindle and cooperating-with said flat surface to retain said pawl in one of said notches, and means for preventingrotation of said, lock.

In testimony that have hereunto set my I claim the foregoing I JOHN ROGLEB. 

